Struct GpuSdfGrid 

pub struct GpuSdfGrid {
    pub data: Vec<f64>,
    pub nx: usize,
    pub ny: usize,
    pub nz: usize,
    pub origin: [f64; 3],
    pub cell_size: f64,
}

A 3-D SDF grid filled analytically via generate_sdf_grid.

Separate from the existing SdfGrid to keep naming unambiguous.

Fields

data: Vec<f64>

Flat storage: index = ix * ny * nz + iy * nz + iz.

nx: usize

Number of cells in x.

ny: usize

Number of cells in y.

nz: usize

Number of cells in z.

origin: [f64; 3]

World-space origin of the (0,0,0) corner.

cell_size: f64

Uniform cell spacing.

Implementations

impl GpuSdfGrid

pub fn new( nx: usize, ny: usize, nz: usize, origin: [f64; 3], cell_size: f64, ) -> Self

Create a new grid filled with zeros.

pub fn index(&self, ix: usize, iy: usize, iz: usize) -> usize

Flat index for cell (ix, iy, iz).

pub fn get(&self, ix: usize, iy: usize, iz: usize) -> f64

Read the value at cell (ix, iy, iz).

pub fn cell_center(&self, ix: usize, iy: usize, iz: usize) -> [f64; 3]

World-space centre of cell (ix, iy, iz).

pub fn sample_trilinear(&self, p: [f64; 3]) -> f64

Trilinear interpolation of the SDF at world-space point p.

Points outside the grid are clamped to the nearest grid value.

pub fn gradient_at(&self, p: [f64; 3]) -> [f64; 3]

Estimate the SDF gradient at p using central finite differences.

The step size is cell_size * 0.5.

Trait Implementations

impl Clone for GpuSdfGrid

fn clone(&self) -> GpuSdfGrid

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GpuSdfGrid

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.